CMT 800.626.11 2-Piece Tongue & Groove Set, 1/2-Inch Shank 3/4-Inch Cutting Length, 1-7/8-Inch Cutting Diameter, 1/2-Inch Cutting depth, 2-51/64-Inch Length Anti-kickback design, Non-Stick Orange Shield Coating 3 SinterHip Hi-Density Industrial Chrome Carbide cutting edges for long-lasting performance For cutting plywood, hardwood/softwood on router tables only Not for use on hand-held routers CMT bits were rated the best overall in comparison to other brand (Test by Wood Magazine)